I know the source of the varying measurements between the Classics and Noir you were talking about, PopZeus. It's located in Drop's Discussion page for the Noirs. The poster (MLSensai) stated that the Noirs are an improvement over his Maple Classics though I wonder if the different wood on his Classics was the cause of the disparity. I wonder whether the Maple Classics sound different from those made from Walnut? They are different types of woods, after all. The Maple Classics look divine by the way, so it's a shame they were discontinued.